Martijn van der Ree will defend the dissertation 'A New Beat. Exploring the Efficacy and Safety of Stereotactic Arrhythmia Radioablation (STAR) for Ventricular Tachycardia'. Supervisors are Prof. A.A.M. Wilde and Prof. B.J. Slotman. The co-supervisors are Dr P.G. Postema and Dr B.V. Balgobind.